Vacuum-actuated abrading device



June 7, 1949. KRYL VACJUM-AGTUATED ABRADING DEVICE Filed Sept. 13, 1945 T 1:,1

INVENTOR 6 00F/P/'0 KPYA ATTORNEY Patented June 7, 1 949 UNITED STATES PATENT OFFICE VACUUM-ACTUATED ABRADING DEVICE 'Godfried Kryl, Inwood, N. Y.

Application September 13, 1945, Serial No. 616,001

[Claim 1 This invention relates generally to attachments for vacuum-producing devices such as vacuum cleaners, and especially to a vacuumactuated motor designed for driving utilitarian rotary elements.

One of the objects of the present invention is to provide a simple, effective, relatively inexpensive and handy apparatus which may be readily secured to the vacuum hose of a vacuum cleaner and operated by the vacuum created by the vacuum cleaner.

Another object of this invention is the provision of a vacuum-actuated motor provided with an intake and a handle-forming outlet, the latter adapted to be associated with the hose of the vacuum cleaner, and wherein the rotor of the motor is employed for driving an exchangeable or replaceable rotary element in the form. of abrasive, polishing or other types of rollers.

A further object of this invention is to. provide in conjunction with the rotary element driven by the motor, combination guiding and positioning means for that element when the. device is employed for treating walls or other flat surfaces.

A further object of this invention is to provide in combination with a vacuum-actuated motor for driving a rotary element suitable means for attaching the entire device to an existing support whereby the rotary element may be employed for sharpening, polishing or otherwise treating various articles.

The foregoing and still further objects of the present invention will become more fully apparent from the ensuing description in combination with the accompanying drawings, wherein:

Fig. 1 is a side elevation of the device in accordance with the present invention;

Fig. 2 is an elevational view thereof as seen from its lower end or bottom;

Fig. 3 is a front elevational view of th device, showing one guard in longitudinal vertical section;

Fig. 4 is a detail side view of an abrasive roller employed in the device; and

Fig. 5 is a side view of a polishing roller also employable with the device.

Referring now more specifically to the figures, numeral In denotes a substantially hollow cylindrical casing, preferably with at least one of its sides removable, as indicated at H, the casing being provided with an inlet 12 and a handle-forming outlet 13, which latter is adapted to be associated with a hose ll leading from a vacuum cleaner or other low pressure-producing source.

Within casing It there is journaled a rotor I5 provided with a plurality of blades Hi. The shaft of the rotor preferably extends through both sides of the casing for accommodating pulleys ll adapted to receive belts l8.

Attached to the sides of the casing and extending from the latter are triple-pronged or three legged, fork-like brackets 19, although their shapes may be varied according to requirements. At the end of the middle rongs 20 of the brackets there are provided bearings 21 for journaling a removably mounted rotary element or member 22. The lower prong members 23 of the brackets removably journal a guide roller 2i, while the upper prongs 25 of the brackets are provided at their end with adjusting slots 26 in which is secured the shaft of a roller 21, the latter also being exchangeable or removable. This roller 21 is shown in Fig. 2 to be of the same length as are rotary element or member 22 and guide roller 24. However, roller 21 may be very narrow and may be located centrally between prongs 25. Two or more spaced, narrow rollers may be substituted if so desired. Such suggested modifications being obvius, they are not illustrated. By the same token it is not essential that brackets l9 be equipped with the upper prong members 25, which latter, together with guide or positioning roller 21 may be omitted.

Each one of the rotatable elements supported by brackets i9 is removable and exchangeable. Rotary element 22 when in the form of an abrasive drum, as clearly seen in Fig. 4, may have circular sides 28 provided with inverted V- shaped grooves 29 for accommodating the ends 30 of an abrasive sheet 3|, wound about the body of the cylindrical or rotary element 22 constituting a drum, and which ends are held in place by a wedge 32. The abrasive sheets 3| are obviously exchangeable and replaceable, as is the entire element 22. Instead of an abrasive element a polishing roller 33, similar to that shown in detail in Fig. 5, may be substituted.

Removably associated with the handle-forming outlet I3 of the device is a clamp 34 serving for attaching the device to an existing support.

It will be observed that inlet I2 is preferably located in near proximity to rotary element 22 and serves for disposing of any refuse caused by the abrasive action of that rotary element during operation. Obviously the inlet may be moved 3 to any other place relative to the housing, but the most advantageous position of the inlet is believed to be indicated in the drawing.

The crossed belts l8 transmitting power from the vacuum-actuated motor to rotary element 22 are preferably encased in side housings 35 to provide safety for the user of the device.

Operation Rotor l5, being operated by the vacuum or low pressure within hose M which is attached to a. vacuum cleaner hose or any other low pressureproducing source and, is caused to rotate, in the presently preferred embodiment of the invention, in clockwise direction, whereas the rotary element moves in opposite direction. When the device is to be used for sanding walls or other surfaces, adjustable positioning roller 21 is set to such a position as to provide the proper depth at which rotary element 22 is to operate in respect to the surface to be abraded. Outlet I3 serves as a convenient handle for the device, and by means of this handle-forming outlet the device can be moved to any desired position in respect to the surface to be treated.

When the device is to be used as a polisher or sharpener of articles, it is attached by means of clamp 34 to an existing support such as a table. Either both or one of the guide rollers 24 and 21 may be removed to provide full accessibility to rotary element 22. Any number of substitute rollers may be employed for various treatments of different articles.

While the accompanying drawing and the description cover but one form of the present invention, be it understood that changes and improvements may be incorporated therein to meet various conditions, without departing from the broad scope of the invention as defined in the annexed claim.

I claim:

In a fluid actuated. surface abrading device, comprising a substantially cylindrical casing having one of its sides removable, said casing having its diametrical dimension more than twice its axial extent and axial hearings in the sides thereof, said casing also having an inlet and an outlet peripherally connected thereto, in combination with a bladed rotor operative within the casing and supported in the axial bearings by a shaft fixed in said rotor, said casing being supported in its upright position by a pair of triple-legged brackets secured to the sides of the casing, the lower ends of said bracket legs being provided with three pairs of horizontal bearings, each pair of bearings being in axial alignment with each other, said rotor shaft extending through and beyond its bearings, one pair of bracket leg bearings being located on an axial line intermediate the axial lines of the other pairs of bearings, in combination with an abrading roller having an axial shaft fixed therein and extending through and beyond the intermediately located pair of bearings, in further combination with a pair of guide rollers having axial shafts fixed therein and respectively occupying the other pairs of bearings, one pair of bearings being adjustable to locate the abrading roller into operative relation to the surface being abraded, the shaft of the abrading roller having a driven pulley on each end thereof, each rotor pulley being in a common plane with its corresponding abrading roller pulley thereby providing for a balanced driving effect between the driving and the driven pulleys.

GODFRIED KRYL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 851,702 Spietschka Apr. 30, 1907 983,988 Foster et al. Feb. 14, 1911 1,078,185 Best Nov. 11, 1913 1,626,742 Lockwood May 3, 1927 1,845,666 Jennings Feb. 16, 1932 1,872,502 Reid Aug. 16, 1932 2,120,252 Kodri June 14, 1938 

